Rear brake lines on an 8 3/4 question...

Does the 7 1/4" even have a vent tube/ bolt?? I don't believe it does!!

Yesterday I squeezed down underneath and tried to have a closer look, it does have a tee block on the 7 1/4, im just not sure if its a regular bolt or vent tube holiding it down... too much grime covering it. ( ._.)